Brindabon Samanta

i am regular watcher of this serial but one thing is not clear that Sreshtha is shown as mastermind of all conspiracy with Chotka against Mohor but she is never punished, whereas Chotka is punished and his conspiracy is caught and shown to public but Shreshtha neither punished nor shown to public that she had bad motive against Mohor. Else it is being understood that after doing so many evil plan against someone one is being escaped without any punishment which is giving bad impression to the public/society.